A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4
We present the results of muon-spin-relaxation experiments for two materials which show geometric frustration. ZnCr22O4 has a spinel structure with S = 3/2 spins on a lattice of corner-sharing tetrahedra. Our experiments show that a local magnetic field which is quasi-static on the muon timescale de...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2002
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| _version_ | 1826297930739351552 |
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| author | Marshall, I Blundell, S Pratt, F Husmann, A Steer, C Coldea, A Hayes, W Ward, R |
| author_facet | Marshall, I Blundell, S Pratt, F Husmann, A Steer, C Coldea, A Hayes, W Ward, R |
| author_sort | Marshall, I |
| collection | OXFORD |
| description | We present the results of muon-spin-relaxation experiments for two materials which show geometric frustration. ZnCr22O4 has a spinel structure with S = 3/2 spins on a lattice of corner-sharing tetrahedra. Our experiments show that a local magnetic field which is quasi-static on the muon timescale develops below Tc = 12.5 K, a transition which has been associated with a three-dimensional analogue of the spin-Peierls transition. In contrast, Gd3Ga5O12 has a garnet structure with S = 7/2 spins arranged on interpenetrating triangular sublattices. In this material the muon data exhibit a temperature-dependent spin-relaxation rate indicative of slow spin fluctuations. We discuss these differing behaviours and relate them to the underlying physics in the two materials. |
| first_indexed | 2024-03-07T04:39:07Z |
| format | Journal article |
| id | oxford-uuid:d101ed2f-1845-46bb-b55c-3db9f95a7fc1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:39:07Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:d101ed2f-1845-46bb-b55c-3db9f95a7fc12022-03-27T07:53:58ZA muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d101ed2f-1845-46bb-b55c-3db9f95a7fc1EnglishSymplectic Elements at Oxford2002Marshall, IBlundell, SPratt, FHusmann, ASteer, CColdea, AHayes, WWard, RWe present the results of muon-spin-relaxation experiments for two materials which show geometric frustration. ZnCr22O4 has a spinel structure with S = 3/2 spins on a lattice of corner-sharing tetrahedra. Our experiments show that a local magnetic field which is quasi-static on the muon timescale develops below Tc = 12.5 K, a transition which has been associated with a three-dimensional analogue of the spin-Peierls transition. In contrast, Gd3Ga5O12 has a garnet structure with S = 7/2 spins arranged on interpenetrating triangular sublattices. In this material the muon data exhibit a temperature-dependent spin-relaxation rate indicative of slow spin fluctuations. We discuss these differing behaviours and relate them to the underlying physics in the two materials. |
| spellingShingle | Marshall, I Blundell, S Pratt, F Husmann, A Steer, C Coldea, A Hayes, W Ward, R A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4 |
| title | A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4 |
| title_full | A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4 |
| title_fullStr | A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4 |
| title_full_unstemmed | A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4 |
| title_short | A muon-spin relaxation (mu SR) study of the geometrically frustrated magnets Gd3Ga5O12 and ZnCr2O4 |
| title_sort | muon spin relaxation mu sr study of the geometrically frustrated magnets gd3ga5o12 and zncr2o4 |
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